The scattering of nonlinearly interacting plane acoustic waves on a rigid elongated spheroid is considered. The foci of the spheroid coincide with foci of the spheroidal coordinate system. The method of successive approximations is used to obtain the solutions to the inhomogeneous wave equation in the first and second approximations. Asymptotic expressions are offered for the components of the total acoustic pressure of the difference frequency wave, and the scattering diagrams for these components are presented. (c) 2007 Elsevier Ltd. All rights reserved.
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